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math.AC2016
Minimal free resolutions for homogeneous ideals with Betti numbers
Alfio Ragusa, Giuseppe Zappalà
We investigate the standard generalized Gorenstein algebras of homological dimension three, giving a structure theorem for their resolutions. Moreover in many cases we are able to…
math.AC2014
Tower sets and other configurations with the Cohen-Macaulay property
Giuseppe Favacchio, Alfio Ragusa, Giuseppe Zappalà
Some well-known arithmetically Cohen-Macaulay configurations of linear varieties in as -configurations, partial intersections and star configurations are generali…
math.AC2011
On the Weak-Lefschetz property for Artinian Gorenstein algebras
Alfio Ragusa, Giuseppe Zappala
We deal with the Weak Lefschetz property (WLP) for Artinian standard graded Gorenstein algebras of codimension We prove that many Gorenstein sequences force the WLP for such a…